1'IB  R.AR.Y 

OF  THE 
UNIVERSITY 
OF    ILLINOIS 


G30.7 


no.235-312 
cop.  2, 


AGRICULTURE 


NON  CIRCULATING 

CHECK  FOR  UNBOUND 
CIRCULATING  COPY 


UNIVERSITY  OF  ILLINOIS 

Agricultural  Experiment  Station 


BULLETIN  No.  296 


CROP  YIELDS  FROM  ILLINOIS  SOIL 
EXPERIMENT  FIELDS  IN  1926 


BY  F.  C.  BAUER 


URBANA,  ILLINOIS,  AUGUST,  1927 


LOCATION  OP  EXPERIMENT  FIELDS  FROM  WHICH  DATA 
ARE  PRESENTED  IN  THIS  BULLETIN 


CROP  YIELDS  FROM  ILLINOIS  SOIL 
EXPERIMENT  FIELDS  IN  1926 

By  F.  C.  BAUER,  Chief  of  Soil  Experiment  Fields 

The  ILLINOIS  AGRICULTURAL  EXPERIMENT  STATION  for  a  number  of 
years  has  conducted  field  investigations  in  all  parts  of  the  state  to  test 
the  effectiveness  of  various  soil  treatments  on  yields  of  farm  crops. 
The  complete  results  from  all  these  fields  up  to  and  including  1924 
were  reported  in  Bulletin  273.  The  results  for  the  major  investigations 
conducted  on  these  fields  in  1925  were  reported  in  Bulletin  280.  The 
present  bulletin  is  a  continuation  of  this  series  of  publications,  giving 
not  only  the  results  from  the  major  investigations  conducted  on  these 
fields  during  1926,  but  also  the  results  from  all  investigations  hitherto 
unpublished,  including  those  from  experiments  begun  during  the  past 
few  years. 

In  these  publications  the  figures  are  presented  as  a  matter  of  rec- 
ord, without  comment  or  discussion.  In  a  broad  way,  of  course,  the 
results  speak  for  themselves  and  carry  certain  definite  lessons  to  those 
who  have  been  following  the  investigations  of  the  Station.  Discussions 
of  these  investigations  have  appeared  from  time  to  time  in  former  sta- 
tion publications,  and  further  discussions  of  an  interpretative  nature 
will  appear  in  future  publications. 

Explanation  of  Tables  and  Symbols 

The  results  reported  on  the  pages  following  are  for  the  individual 
fields  arranged  alphabetically  rather  than  by  location  or  soil  type.  The 
location  of  these  fields  in  the  state  can  be  ascertained  by  referring  to 
the  accompanying  map. 

All  yields  except  those  in  parentheses  indicate  acre  yields  in  bush- 
els. Yields  in  parentheses  indicate  acre  yields  in  tons. 

The  following  symbols  have  been  used  in  this  bulletin  to  denote 
the  soil  treatments  applied: 

0  =  No  treatment  rP  =  Rock  phosphate 

M  =  Manure  aP  =  Acid  phosphate 

R  =  Crop  residues1  sP  =  Slag  phosphate 

Le  =  Legume  catch  crop2  bP  =  Bone  phosphate 

L  =  Limestone  S  =  Flowers  of  sulfur 

K  =  Potash  KC1  =  Muriate  of  potash 


lrThe  crop  residues  are  chiefly  cornstalks  and  sweet  clover  plowed  down  as  a 
green  manure.  In  some  cases  the  second  crop  of  clover  and  other  legume  residues 
have  also  been  plowed  down. 

"Legumes  seeded  in  small  grain  to  be  plowed  down  the  following  year  for 
succeeding  crops. 

19 


20 


BULLETIN  No.  296 


[August, 


2 

2 


pa 


•cS§ 

*sc3 


is! 


WOT  W 

OWTO       WO 

T  O  W  O 

W  CO  W  W 

o« 

xS     25 

S*   sg 

ss°§ 

sisss  ss 

iSOt^O 

iS  ISO  O 

§t- 
us 

Qt*. 

•si  1& 
a-S   §5 

°o     «eg 

la  ^1 

§{:*.£ 

OCOf-  W       —IN 
COt~WCO       OW 

coocoo 

ISISWU5 

CON 

a-g     gi 

«£     -S 
-C  *•     "e-15 

"I  is 

«  £     5"" 

O  WIN  W 

O  WOO       WT 

woo  w 

ONINO 

§o 
T 

NO 

e  c    .  **  !>> 

^  0  g-g  i 

«>^  t!  a  s 

2    §  -  ™ 

lilfi 

ONON 

wor-w     oo—i 

T  iS  O  O       O  iS 

oo  —  o 

IS  iS  O  O 

NO 

KiM 

tMlli 

0  WOO 

O  WO  W       T  W 

ooo  w 

OT  WO 

r-  woo 

Ot- 

iii  Hi 
jPiii 

t^OOO 

COCOON       OO 
00  W  W  O       O  t- 

TiSO  —       COW 

wo  —  w 

w  woo 

iS  O 

oo 

£»*«£§• 

liiiii 

iHifp 
&ils5a 

T  iS  W  G 
NCOOW 

3£-t^-(-     wo 

•coot^ 

t-  t-  t-  i- 

wt^ 

:1|^1 
li^lii 

°«-2-53=» 

SN-SS 

oooo     cow 
is  ro  o  N     w  is 

K 
& 

N  IS  N  W 

ONOCO 

wo 

"•"•s.&s 

Sa     §2* 

IilJs-3 

f^li! 

CO  —  iS  O 

MTWO       —O 

NOTW 

00  —  C 

cow 

S§"§JSc 

W  WNO 

MOOT       O  W 

OOINT 

ww 

*I!'s§ 
•si  IfliS 

§"3.0  e-0,,- 

«  o.-s.a  «g 

WON  W 

ININ  —  C       ON 

W  O  O  O       TO 

COOOO 
T  WOT 

TiSt-  W 

OWININ 

-o 
ow 

S^cg^S 

iilill 

il-lis 

•   -ot- 

Soo^     r^T 

•     -SS 
•     -t^W 

^ 

IP-8*! 

^521=^^ 
s_i  f  ao 

Is-Sjlo 

.^^ 

*~s*~^ 

ON  —  T 

••ej*a" 

1  8«1    J 

UK 

.« 

:;:; 

I 

|«8  Jll 

U   X  J5   3   ^ 

Ptet 

—  4)  *»_O  o 

CJ=  «5        3 

lllli 

j*g 

.       .       .       .         tt 

siii 

"" 

X.   • 
---- 

S2 

oo 

Note.—  In  19: 
halves  of  all  series 
be  applied  to  the 
On  the  east  h 
rates:  rock  phos 
of  the  clover  greet 

CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


21 


TABLE  2.— ALEDO  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Series  500 

Series  600 

Series 

700 

Series  800 

Soil 
treatment 

Wheat 

Soil 
treatment 

Wheat 

Soil 
treatment 

Wheat 

Soil 
treatment 

Wheat 

1 

2 
3 

4 

R... 
RbP.  .  . 

.     44.0 
.     59.2 

R.  . 
RaP  .  .  , 

.     43.3 
.     60.6 

R  
RrP.  . 

.     44.8 
.     59.2 

R... 
RsP.  . 

.     45.8 
.     60.2 

RLbP  

62  0 

RLaP  . 

.     64  4 

RLrP 

.     57.5 

RLsP   . 

66  0 

RL  

.     44.6 

RL  

.     47.3 

RL  

.     48.8 

RL  

.     48.2 

TABLE  3— ANTIOCH  FIELDi 


Plot 
No. 

Soil  treatment 

1924 
Oats 

1925 
Clover 

1926 
Wheat 

1 

0.  .  . 

.   17.5 

(2.37) 

26.5 

2 

LrP. 

.  25  3 

(4  11) 

41  3 

3 

LRrP.  .. 

24  .  7 

(2  69) 

44.3 

4 

LbP.  . 

26.9 

(4.51) 

48.5 

5 

LKrP  

13.1 

(4  .  27) 

44.3 

6 

LRbP... 

.  .   28.4 

(3.16) 

52.2 

7 

LRK.  .  . 

20  3 

(2.31) 

31.7 

8 

LKbP.  .  . 

30.6 

(4  .  60) 

49.3 

9 

LRKbP 

27.8 

(2  58) 

51.5 

10 

RbPK  

26.6 

(2.86) 

48.8 

'At  Antioch,  beginning  with  1924,  rock  phosphate  has  been  applied  to  Plots  2,  3  and  5  at  the  annual 
acre  rate  of  500  pounds,  one-half  of  the  rotation  application  is  made  ahead  of  the  oats  crop  and  one-half 
ahead  of  the  wheat  crop.  The  soil  treatment  remains  unchanged  on  the  other  plots. 


TABLE  4.— BLOOMINGTON  FIELDi 


NORTH  HALF 

SOUTH  HALF 

Soil  treatment 

1924 
Oats 

1925 
Clover 

1926 
Wheat 

Soil  treatment 

1924 
Oats 

1925 
Clover 

1926 
Wheat 

R... 

.     60  6 

(   .79) 
(1.63) 
(2.18) 
(1.81) 
(1.66) 

(2.18) 
(2.11) 
(1.69) 
(2.18) 
(1.93) 
(1.68) 

29.3 
35.0 
32.5 
37.3 
32.5 

40.5 
35.3 
39.2 
43.8 
45.7 
45.3 

o 

58.4 
53.2 
71.3 
67.2 
78.4 

71.6 

80.9 
65.0 
72.2 
51.2 
60.0 

(2.54) 
(  .75) 
(1.74) 
(1.89) 
(1.59) 

(2.21) 
(1.66) 
(1.59) 
(1.65) 
(1.53) 
(1.78) 

19.5 
18.7 
41.0 
36.7 
40.7 

40.0 
40.7 
36.0 
41.5 
43.0 
44.5 

RLbP... 

.     72.6 

RL     . 

RLrP 

68  2 

RLaP 

RLbP... 

57  6 

RLbP     . 

RLrPK  

.     63.2 

RLaPK  

RLbP... 

.     68.8 

RLbP... 

RLrPK  .  . 

71   2 

RLaPK 

RLbPK.. 

.      60.9 

RLbPK  

RLbPK  

.     60.9 

RLbPK  .  . 

RbPK  .  . 

.     48  2 

RbPK  

RrP  

.      70.4 

RaP  

'At  Bloomington,  in  1924,  an  additional  plot  was  laid  out  at  the  east  end  of  the  series.  All  plots 
were  divided  into  north  and  south  halves  and  the  soil  treatment  planned  as  follows:  Residues  (corn- 
stalks, the  second  crop  of  red  clover,  legume  green-manure  crops)  to  be  turned  under  on  all  plots  except 
Plot  IS.  Different  phosphorus  carriers  to  be  applied  at  the  following  acre  rates  per  rotation:  bone 
meal,  1,000  pounds,  to  Plots  2N.  4N,  6N,  8N,  9N  and  ION;  rock  phosphate,  2,500  pounds,  to  Plots 
3N,  5N,  7N,  and  11N;  acid  phosphate,  1,000  pounds,  to  Plots  3S,  58,  78,  and  US.  Two-fifths  of  the 
rotation  application  of  these  phosphates  is  to  be  made  ahead  of  the  oats  crop,  two-fifths  ahead  of  the 
wheat  crop,  and  one-fifth  ahead  of  the  first  corn  crop. 


22 


BULLETIN  No.  296 


[August, 


TABLE  5.— CARLINVILLE  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Wheat 

Series 
200 
Clover 
alfalfa 

Series 
300 
Corn 

Series 
400 
Oats 

1 

0.  .  . 

..13.6 

(1.65) 

24.8 

32.3 

2 

M  

21  0 

(2  .  33) 

41.3 

38.8 

3 

ML... 

22.7 

(3.09) 

52.3 

46.1 

4 

MLrP  

21.3 

(3.16) 

52.3 

43.3 

5 

0.  .  . 

.  .  9.2 

(1.80) 

36.7 

33.6 

e 

R... 

10  8 

(1.67) 

37  6 

36.3 

7 

RL.  .. 

18.8 

(2.09) 

50.7 

40.6 

8 

RLrP  

21.8 

(2.44) 

57.5 

43.8 

9 

RLrPK  .  . 

.  ..25.8 

(2.93) 

52.5 

62.5 

10 

0  

7.9 

(1.91) 

42.0 

32.2 

TABLE  6.—  CARLINVILLE 

FIELD: 

MINOR 

SERIES 

1925 

1926 

Serial 
plot 
No. 

Soil  treatment1 

Series 
700 
Corn 

Series 
800 
Corn 

Series 
700 
Wheat 

Series 
800 
Wheat2 

1 

LeL  (250)  .  . 

.     52.6 

60.0 

13.5 

2.2 

2 

LeL  (1000)  

..     51.4 

54.6 

13.7 

6.3 

3 

LeL  (500)  

...     51.2 

56.2 

14.2 

12.2 

4 

LeL  (500),  superphosphate  

...     64.6 

60.0 

24.8 

19.8 

5 

LeL  (500),  acid  phosphate     

65.2 

60.2 

23.8 

18.3 

6 

LeL  (500),  rock  phosphate  

...     57.4 

60.0 

21.5 

14.3 

7 

L  (500)  

.  ..     46.6 

43.6 

13.5 

6.3 

1The  figures  in  parentheses  refer  to  the  pound  rate  at  which  limestone  is  applied  annually.  Series 
700  has  now  received  four  times  these  rates  in  two  applications  and  Series  800  has  received  twenty  times 
these  rates  in  one  application. 

2Due  to  the  continuous  rains  in  the  fall  of  1925,  the  wheat  on  Series  800  at  Carlinville  was  seeded 
17  days  later  than  on  Series  700.  The  later  date  of  seeding  is  probably  an  important  factor  in  the 
difference  in  yields  on  the  two  series. 


TABLE  7.— CARTHAGE  FIELD:     MAIN  SERIES 


Serial 
plot 
W 

Soil  treatment 

Series 
100 
Wheat1 

Series 
200 
Clover 

Series 
300 
Oats 

Series 
400 
Corn 

1 

0.  .  . 

12.9 

(1.62) 

32.5 

45.7 

2 

M.. 

14.2 

(3.22) 

45.3 

60.8 

3 

ML... 

5.4 

(3.38) 

50.8 

70.6 

4 

MLrP  ._  

7.1 

(3.45) 

53.9 

73.9 

5 

0.  .  . 

10.4 

(1.96) 

33.6 

47.6 

6 

R... 

12.1 

(1.03) 

46.1 

51.6 

7 

RL.  .. 

12.1 

(1.50) 

64.8 

64.2 

8 

RLrP  

9.2 

(1.53) 

66.4 

65.1 

9 

RLrPK  .  . 

.      30.8 

(1.45) 

69.5    • 

73.3 

10 

0  

13.8 

(2.26) 

33.6 

51.6 

(The  wheat  at  Carthage  was  seeded  late  in  the  fall  of  1925.     It  had  made  but  slight  growth  before 
the  close  of  the  season  and  came  thru  the  winter  in  poor  condition  excepting  on  Plot  9. 


19271 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


23 


TABLE  8.— CARTHAGE  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Soil  treatment1 

Series 
500 
Corn 

Series 
600 
Corn 

Series  700 

Oats 

Stubble 
clover 

1 
2 
3 
4 
5 
6 
7 
8 

RL.  .  . 

.     49  2 

73.0 
74.4 
62.8 
68.6 
74.0 
68.4 
69.2 
67.6 

29.7 
28.8 
31.3 
26.6 
25.0 
25.0 
29.4 
26.6 

(.68) 
(.82) 
(.82) 
(.82) 
(.68) 
(.85) 
(.85) 
(.68) 

RLrP  (100). 

62.8 

RLrP  (100), 
RLrP  (200)  . 

gypsum  (100)  

...     66.8 

80.2 

RLrP  (200), 
RLrP  (400)  . 

gypsum  (200)  

70.4 

....     89  8 

RLrP  (400), 
RL  

gypsum  (400)  

74.6 

51.2 

'The  figures  in  parentheses  indicate  the  annual  acre  rates  (pounds)  at  which  rock  phosphate 
and  gypsum  are  applied. 


TABLE  9.— CLAYTON  FIELD 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Wheat 

Series             Series 
200                 300 
Clover            Oats 

Series 
400 
Corn 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0.  .  . 

22.7 
30.7 
39.0 
41.7 

26.3 
36.2 
39.2 
41.7 

49.2 
33.7 

.39 
.62 
1.73 
1.87 

.41 
.09 
.46 
.73 

1.06 
.37 

28.4 
36.9 
47.3 
53.8 

33.1 
34.5 
59.8 
60.9 

61.7 
33.6 

42.9 
68.5 
69.7 
69.3 

48.2 
51.3 
51.7 
69.8 

73.8 
48.9 

M.. 

ML... 

MLrP  

0.  .  . 

R.... 

RL.  . 

RLrP  

RLrPK  .  . 

0  

TABLE  10.—  DIXON  FIELD 

:    MINOR 

SERIES 

Serial 
plot 
No. 

1925 

1926 

Series 
Soil  treatment            500 
Oats 

Series 
600 
Corn 

Series 
700 
Corn 

Series 
800 
Alfalfa 

Series 
500 
Alfalfa 

Series 
600 
Oats 

Series 
700 
Corn 

Series 
800 
Corn 

1  N 
IS 

2N 

28 

3N 
38 

4N 

48 

K.  . 

51 

.6 
.7 

,8 
,1 

,6 

9 

,1 
,0 

48.4 
52.6 

66.6 
74.2 

78.0 
73.4 

71.8 
72.0 

73.6 
69.6 

77.8 
72.4 

81.4 
79.0 

78.2 
82.0 

3.78 
4.02 

4.08 
4.19 

4.51 
4.19 

4.91 
4.60 

1 
1 

8 
2 

5 
4 

5, 

B 

.56 
.63 

.03 
.96 

.03 

.86 

10 
14 

40.6 
39.4 

44.1 
51.3 

63.8 
56.6 

65.0 
56.3 

31.2 
28.2 

52.2 
43.8 

50.8 
39.6 

42.0 
40.8 

40.4 
35.0 

53.2 

54.8 

58.8 
56.2 

62.2 
58.8 

0  

49 

MK.  . 

62 

M  

59 

MLK.. 

.     71, 

ML  

66 

MLrPK.  . 

73 

MLrP  

65 

(See  next  page  for  Table  It,  Dixon  Field) 


24 


BULLETIN  No.  296 


fe 

o 


ss2 

TfOOtO       OONOIN       0000 

O^«DN       ONIN-^i       OO-^t 

p^  -s  s 

•Ss*'    •«    '> 

l-o 

•&<3s<-<tt       O—KNN       •*£» 
•^•OCDtD       ^"lOUJir;       lOW 

OCCO5OO       OSi-iOOOO       OOt- 

NOsr-00       IMOO500       t>-K5 

TjllOlOlO          T»ll«T)l^<          lOTtl 

O5COb-O       INOSO'*       i-lt~ 

*?&  1  1 

•SS2      *      £ 
s  a  £     «j-      B 

S-S*3      *      * 
£•«>     •"      a 
o  S-S      '      g 

h  O  08 
ajWo 
02  w 

NOO>O     to^fMW     oon< 

(N^tfjTll          C^WTjlTlt          Tt<N 

mooso     wooro     OOTC 
IM^^IO     ecrooio     u5w 

^ja'o     a     a, 

a"     °    "S 
e,*  o     "O 
„  «  P     a     2 

181     "^a 

.22  > 

TfTfioO       t>-<NOOCO       OOO 

t~obi-KN     ooomiN     <Nt- 

iCCOt^iO       «DO-*(N       "Htx. 
O>00'-<O)       P5OOIN       f  N 

^§^  1§8 

fe<N^ 

-HNIM             i-lrHN       N 

r-ilNIM       —  i—i(NN       (N-H 

.sl£  111 

^Q  S 

Ot~OON       OWU500       MM 

COININIM       lOt^CCt^       «300 

H  o   •      ?  o   - 

c^l  2*1 

a**  "Ssg 

ssi 

CO  ^ 

«2  S 

oo-Hiooo     NOTOIO     "*oo 
w^i^i^i     W^^TJI     ^e* 

r^c^iNO     MCOCJO     fio 

tOCStOcO       -H(Nb-(N       t^-* 

COCOl)t^(          ^TJH^"^          TfM 

owmoo     «oe<it^iN     cooo 

«*s  Il« 

^^*    -S&-3 

|^1  !&§ 
a^i  Hi 

•£§£ 

CO  ^ 

"s£ 

O  »O  «3  00         Tf  1-H  O5  SO         00  N 
—KNMCO        r-IC^IMCO        COrH 

OOO5O5O       OOWO       «•* 

tOOt^t^       O»O>'5O       <Oi-< 
(NN(N       1-1  1-1  MM       Mi-l 

OOO5OIN       OOOINO       O® 

I.S§  Ifc 
|]3  3p§ 

•S-^,1"       OO>T- 

Sa°     J«S 

>  0-3      Srs 

*Ex  y 

GJ  Wr-\ 
02  U 

oo5 

giot-N     MTCOI-I     "-no 
ooooo     ecxor^oo     °o® 

ocoroo     coiNoso     wos 

•Oman-'     tocot-oo     ujiH 
«noo«o     cot-t^t-     oot» 

IMO<N-H       OOM-*"O       OSO5 

.SS-S    tSS" 

_,  -t^  O       ^^  g  O 

Tag*3     ^«E 
a  £  e8      ^.  «" 

.2-^-c    -3g5 

=g|l  l-s-g 

'CO  03 

1OO«OO       ONK5i-<       eOUS 

t»O«NOO       OO'O'l't^       OiC 

^          O          C    0512 

Cfl    0>   0          O'S'S. 

02  ° 

HS  «-is 

ill  -Ja.§ 

•sg^ 

Eg  o 

P* 

»J 

ojTjHioo     oiNi-iTji     oeo 

NMINCO       •-ION5O       00  1-( 

fe 
H 

a 

8n««o     osMioi-i     Oi-i 
TfiiCO       OlOOOtD       00  1-1 

^     -!.     —           +2  O  -^ 

a  a>  5      oor3 
g  s»-a      SIN  ^ 

« 
« 

n 

a 

rfl  5          2    0   03 

f^^    5*S 
•35a    «•§.£ 

•M 

H 
P 

MOCOIN       fflt^OOffi       "-"OS 

t-ooeoos     tDcnoo     N>o 

i 

lot^'-n-i     rot^-too     >oco 

NrtiOO       t^cDO'*       "3® 

*gl    SS" 

-1"  CJ3       •-SJ3'!S 

fe-*^ 
oj  O 

Sol 

O 
02 

2J-G-S3S-    jj^wTf    ^.53, 

OONN       NWCW       t»O 

55 

INMMTf       NNTjiM<       M"O 
KSOOINN       MMOOM       Nt- 

IK  III 

?§•=  Is.! 

•*S    Q^M 

1% 

So  £ 

OW-HOO       tOt^iQrf       t^O 
CqCO^M       IMINCO-*       WIN 

<DCOTj<O       OOOM«O       NOO 

MOO2N       ®«3OO>       t-O! 
i-iMNM       INN-<1<CO       Mi-i 

•^OOOOO       OOININO       •"J'O 

5^S     *«3 

i«l  5|| 

_  j2  o       C       o 
_gt3^       GO  o 

e-g.S     SSlg 

fal 

^^0 

£o5 

—  '  t^  <N  (N       i!5^-i^O5       <N>C 

^mcoco     tioio>o     o^< 
IMNIN«O     osret^-*     t^-M 

MNNOO       •^'Op'O       WO 

Tjicotom     TjotsiS'O     m^ji 

MM^"^       ®T)»COOO       MM 

151  ||| 
11!  11^ 

„,  5  a)       oo  jg  >> 

£  a  >     fec.^ 

•CO  * 

0^"° 

Nt»t~--i       >COO500       O»«-i 

tiotct^     Tj-tot»r~     so-* 

COOM-*       -H-^OM       O^ 

MC^OI--     iowr-co     t»^i 

S33  l-ai 

111  l£l 
||S  III 

I'SiJ   J*| 
f^l.lle 

oil  treatmer 

:  :  :  :     :  :  :  :    g  : 

:  :  :  :     :  :  :  :    s,  : 
s 

M 

8i|jj-s«2 

2^o'g^3° 

ll"2--^^ 
^  «-s  «  fl  s 

IM%I:I. 

*"  BQ.       «3  fi  cSTf 

.55  "o  d 
fe-oZ 

BO 

;  :  i%     :  :  :%   § 

.  .^j     .  ^^  ,5 

o'SSS    dtf«tf    «o 

-HNCC'f       idtSI^OO       OO 

•  •  •  :     •  •  :  •    M 

:  :%CL,     :  IPHQ!   oV 

•pL,-fi  «a     a,  «,  »  *      »-  " 
"Jidd      «^^^     iJiJ 

rtSSS   rttfrttf   tftf 

i-HNM'J'       «35Ob»00       WO 

Note.—  In  1924 
of  all  series  continu 
applied  to  the  phos 
north  half  of  Plot  9 
On  the  north  h 
corn,  at  the  followi 
The  minimum 
been  applied  in  192 

1927} 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


25 


TABLE  11.— ELIZABETHTOWN  FIELD 


Serial 
plot 
No. 

Soil  treatment 

Series                Series 
100                   200 
Soybeans          Wheat 

Series 
300 
Corn 

Series              Series 
400                  500 
Wheat              Corn 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0.  .  . 

.      (1.06) 

1                1 
3 
11 

21 

1 
6 
14 
29 

32. 
1               14. 

.3 

,9 
.1 
.1 

7 
0 
5 

2 

1 
4« 

30.7' 
16.9 
42.7 
37.0 

6.2 
8.6 
19.5 
37.4 

31.4 

17.7 

24.4' 
24.8 
32.2 
37.7 

17.8 
19.7 
24.5 
33.0 

32.5 
18.4 

21.4 
24.0 
33.6 
34.0 

17.2 
14.6 
29.8 
33.0 

39.6 

18.8 

M 

(     69) 

ML... 

(1.21) 

MLrP  

(1.55) 

0... 

.      (   .41) 

R.. 

.    .    .      (   .38) 

RL  

(   .86) 

RLrP  

(1.39) 

RLrPK  .  . 

.      (1.40) 

0  

(   -88) 

Plot  A 

Plot  B 

PlotC 

Soil  treatment 

1925 
Corn 

1926 
Soybeans 

1925 
Soybeans 

1926 
Wheat 

1925              1926 
Wheat           Corn 

RLaP. 

60.2 

(    .85) 
(    .78) 

(1.66) 
(1.27) 

34.5 
29.8 

8.5 
10.0 

42.4 
43.4 

RLrP. 

62.0 

'Plot  1  on  Series  100,  300,  and  400  and  Plot  10  on  Series  100  and  200  lie  on  lower  ground  and  are 
in  a  higher  state  of  fertility. 

(See  opposite  page  for  Table  IS,  Dixon  field.) 


TABLE  13.— ENFIELD  FIELD:    MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Wheat 

Series 
200 
Timothy- 
clover 

Series 
300 
Oats 

Series 
400 
Corn 

1 

0 

7.8 

(0.00) 

6  9 

16  7 

2 

M  

12.1 

(0.00) 

7.8 

20  7 

3 

ML... 

21.0 

(   .65) 

6.7 

41.4 

4 

MLrP  

24.9 

(1.43) 

8  0 

44  2 

5 

0..  . 

10.8 

(0.00) 

6.3 

19.2 

6 

R  

11.8 

(0.00) 

6.3 

23.7 

7 

RL 

22  6 

(     56) 

6  6 

30  2 

8 

RLrP             

27.0 

(   .68) 

5.8 

35  6 

9 

RLrPK    . 

33.0 

(1.39) 

11.3 

42.5 

10 

0  

13.2 

(0.00) 

8.1 

26.2 

TABLE  14.—  ENFIELD 

FIELD: 

MINOR  SERIES 

1925 

1926 

Serial 
plot 
No. 

Soil  treatment1 

Series 
700 
Corn 

Series 
800 
Wheat              ^ 

Series 
700' 
iVheat 

Series 
800 
Corn 

1  W 

L 

18  4 

5  7 

26.0 

1  E 

L  

18.9 

10.7 

29.6 

2  W 

LrP  (2000)  aP  (100),  sweet  clover.  .  .  . 

24.6 

13.3 

31.6 

2  E 

LrP  (2000)  aP  (100),  red  clover 

21  2 

14  7 

32.0 

3  W 

LrP  (2000),  sweet  clover.. 

25  0 

12.0 

28.0 

3  E 

LrP  (2000)  ,  red  clover  

18.8 

14.0 

25.6 

4  W 

LrP  (1000)  aP  (200)   sweet  clover 

24  0 

10  0 

23.6 

4  E 

LrP  (1000)  aP  (200),  red  clover 

26  2 

12.0 

26.4 

5  W 

LrP  (1000),  sweet  clover. 

21   1 

11.  0 

25.2 

5  E 

LrP  (1000)   red  clover 

21  8 

12  7 

27.6 

6  W 

12  1 

10  7 

26.8 

6E 

L,  red  clover  

18.9 

12.3 

30.4 

»The  figures  in  parentheses  indicate  the  annual  acre  rates  (pounds)  at  which  the  application  of  phos- 
phate are  made. 

»Threshed  as  a  unit  on  account  of  heavy  winds  destroying  the  identity  of  the  plots. 


26 


BULLETIN  No.  296 


[August, 


TABLE  15.— EWING  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Wheat 

Series 
200 
Soybeans 

Series 
300 
Oats 

Series 
400 
Corn 

1 

2 
3 
4 

5 
6 
7 

8 

9 
10 

0     . 

3. 

1 

7 

8 

1 
1 

2 

7 
8 

4 
0 

(I. 
(1. 

a! 

(i. 

(i. 

76) 
88) 
66) 
89) 

84) 
89) 
61) 
57) 

88) 
99) 

2 

10 
12 

ia 

6 
6 

11 

10 

20 
(I 

.2 
.2 
.8 
.0 

.8 
.9 
.7 
.9 

.3 
.1 

19.6 
34.3 
52.6 
51.1 

24.7 
29.7 
30.6 
39.9 

61.6 
29.6 

M.  . 

12. 

ML     

.    .       37. 

MLrP  

39. 

0   .  . 

2. 

R 

1 

RL       

27. 

RLrP  

26. 

RLrPK.  . 

41. 

0  

3. 

TABLE 

16.—  EWING 

FIELD 

:     MINOR 

SERIES 

Serial 
plot 
No. 

Soil  treatment1 

1925 

1926 

Series 
700 
Wheat 

Series 
800 
Corn 

Series 
900 
Oats 

Series 
700 
Corn 

Series 
800 
Oats 

Series 
900 
Wheat 

1 

2 
3 
4 

5 
6 
7 

Le  

..    .        13. 

5 

0 
2 
.5 

,8 
3 
.2 

17.1 

26.0 
28.0 
31.8 

18.4 
27.7 
27.9 

10 

19 
M 

22 

22 

28 
28 

0 

4 

.0 
.5 

.5 
.1 
.1 

24.4 

24.8 
25.0 
31.2 

32.0 
35.0 
30.6 

6.2 

5.0 
2.5 
3.8 

3.8 
3.8 
5.0 

1.3 

9.3 
11.7 
15.3 

6.0 
11.7 
11.0 

LeL... 

11 

LeLaP  (100)  

....        15 

LeLrP  (200) 

15 

LeL... 

13 

LeLaP  (200)  

16 

LeLrP  (400)  

15 

!The  figures  in  parentheses  indicate  the  annual  acre  rates  (pounds)  at  which  the  applications  of 
phosphate  are  made. 

(See  opposite  page  for  Table  17,  Hartsburg  field,  Series  100  to  400.) 


TABLE  18.— HARTSBURG  FIELD:    SERIES  500 


Plots  501  to  505                          Plots  506  to  510 

Plots  511  to  515 

Serial 
plot 
No. 

Soil                        1926                        Soil 
treat-        1925  Clover-    Plot         treat- 
ment    Wheat   alfalfa     No.         ment 

1926                         Soil                        1926 
1925  Clover-      Plot        treat-          1925  Clover  - 
Wheat    alfalfa      No.         ment        Wheat  alfalfa 

1 
2 

3 
4 
5 

0 

33  0     (     61)        6     R 

34  1 

(1.03) 
(1.25) 
(1.44) 
(1.38) 
(    .78) 

11     LeM... 

30  4 

(   .82) 
(   .99) 
(    .96) 
(0.00) 
(0.00) 

M 

33  9     (     73)        7     RL  

.    .     26.2 

12     LeML  30.5 
13     LeMLrP...     33.7 
14     LeMrP....     29.7 
15    0  22.9 

ML... 
MLrP 
0  

..     38.3     (1.10)        8    RLrP... 
...     34.8     (1.12)        9     RLrPK. 
..     28.3     (   .80)      10    0  

..     29.6 
.  .      30.4 
..      26.1 

TABLE  19.—  JOLIET 

FIELD: 

MAIN 

SERIES 

Serial 
plot 
No. 

Series 
Soil  treatment                   100 
Corn 

Series 
200 
Alfalfa 

Series 
300 
Wheat 

Series 
400 
Clover 

Series 
500 
Oats 

Series 
600 
Corn 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0     . 

33  7 

(   .27) 
(   .45) 
(1.00) 
(2.23) 

(  .50) 
(   .48) 
(   .91) 
(1.58) 

(2.03) 
(   .50) 

18.0 
22.5 
27.2 
36.1 

19.8 
20.9 
24.3 
35.5 

39.0 
16.6 

(   .54) 
(   .93) 
(1.42) 
(1.76) 

(   .63) 
(   .88) 
(1.00) 
(1.44) 

(1.74) 
(   .54) 

61.3 
67.7 
64.2 
70.5 

59.5 
57.5 
55.2 
73.6 

77.7 
52.7 

35.4 
40.6 
38.0 
46.9 

32.9 
40.7 
43.5 
46.0 

54.0 
32.6 

M.  . 

48.5 

ML.., 

52.4 

MLrP 
0.  .. 

51.5 

.     30.9 

R  

30.5 

RL.  .  . 

36  2 

RLrP 

RLrPl 
0  

47.9 

£..'.                                .     50.8 

34  .  8 

1927]          CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


27 


JfiS 

Co  a! 


*«a 


SS 

•S  > 


lid 

*85 


^ONIN 

OCOOrJ«O        OCN 

CO  CO  CO  00 

OCOINCO 

OOIN 

=33-5  s  -s 

Jl'BSa     i 

WU5U51O 

.  t—  t  CO  ON       ^  Cs 

CO  lO  1C  US 

CO  OS  00  OS 

CO  US  CO  CO 

o  woo-* 

cot>. 

CO-* 
OS  W 

°  —  •*      "^       a. 

i«*  j  1 

•JicOCSW 

W  W-«CN       OOCO 

O  CO  CO  US 

US  —  CO-^i 

OU5 

|  s  *•      o      g" 

00  US  NO 

OOOOOO       0000 

CNOOUSW 

US  CO 

f  f  0      "0      "C 
fl)   ^  *•-"         II         o 

-a      cu      a      ' 

US^-0000 
CNCNCNCN 

(NCNCNCO       COcN 
^  CO  CO  CO       CN  ^ 

COOCOCN 

333% 

woo 

WCN 

o  a"o     «  QH 
p^j;     c  fi-o 

•*  ^  §    "2  §"2 

L_i           06           C     ^    M 

us  ••o  cor- 

OOOCNO 

1O  CO  CO  CO        US  US 
OCOOO'*       OOtN 

McNOsCS 
00  CO  CO  00 

—  INOUS 
t>»  t^  t^  CO 

COUS 

US  CO 

£  »  S    ^-S^1 

WOO  CO  iO 

•«.  us  co  co 

ST-  I  -  /        CN  OS 
t^OOOO       00-* 

COCOTJIOO       OOIN 

.-  /  _  - 

ooousw 

00 

OOCO 

all  111 

S,  »s  o     -a^  * 

CO  ^  ***  ^f 

os  oo  >~^  ^     co  10 

U5  CO  t^b*       l  -  >~ 
OO^HWCN       U5CO 

•:•-—  — 

cccooot-. 
--b-t-ro 

•ow 

OS  US 

.Sao.     3—  v 

•si's  l|  §• 

;  _  _  - 

<N-<»i-<CM       (NO 

**  co  os  00 

~-  ~    ~  -^ 

U5CN 

§e-3    jj8 

iO  WCNUS 

00  IN 

I!!  ill 

-j*!  5^1 

WCOCN  W 

CN  W  C*i  CO       CO  CO 

W 

00  CO  ^-t  CO 
CN  CO  CO  *"^ 

oooowo 

re  x  ~  i—  < 
OOiOUJco 

cow 
oow 

a>*cj  cj      p*  jj  • 

JE  SS    ^  S  ® 

^3  E  5f     n-S-*3 
j  oa.S    -2  a*3 

OOO^ 

CN  CN  CO  CO       CO  W 
OOOCOO       CNOO 

W 

US  CO  OS  OS 
rtcN  WCO 

1<  •«)••<»<  CO 

*5*5 

OS-* 

ww 

OOO 

|||  |-a| 

111  ill 

•**            0?            Cl«  rr"-^ 

OO'f  OCO 

?SK§   £% 

00  CO  00  00 

^COt^t* 

ooooooO 

COCO 
OcN 

(f  ^-5    g  1  1 

3  °-o        C8  S.g 

•222     So3 

WCNCNIN 

iOCOt>-CO 

SS8S   SS 

S55§io 

SCO  CD  00 
co  10  co 

OOO 
t^iO 

'£  JS  *»        ttf  *  V 

111    f|5 

82SS 

Si2§S    S|2 

'-:c't  ~  .x 

£££K 

OOCO 

1-1     E'ftS 

rH        —  < 

rH           1-4 

a  S  a     N^<  g 

OOS  —  W 

coost^oo     oo^< 

.WU5- 

.000000 

00  OS 

.g  E  «  a  s  g 

a;  ^3  oo      **"  oo  4J 

00  00  t-»  00 

oowcoos 

INiO 

oo  r- 
£ 

c-jjj    "ftggS 

i 

5 

^"2-5  s  2  '5  c  « 

jrf3 

Z———       tfd 
U5COt»»       OSO 

i-CNCO-* 

"™ 

-- 
«« 

Note.—  In  It 
series  continue  ur 
the  phosphate  pic 
Plot  9  on  all  serif 
On  the  east  1 
crop,  at  the  folio 
The  in  i  niii  an 
an  acre  having  In 

28 


BULLETIN  No.  296 


[August, 


TABLE  20.— JOLIET  FIELD:     MINOR  SERIES 


1925 

1926 

Serial' 
plot              Soil  treatment 
No. 

Series       Series 
700          800 
Soybeans  Wheat 

Series 
900 
Barley 

Series 
1000 
Corn 

Series 
700 
Corn 

Series 
800 
I^egumes 

Series 
900 
Wheat 

Series 
1000 
Barley 

1 
2 
3 
4 

5 
6 
7 
8 
9 
10 
11 
12 
13 

.   (1 

(2 
(1, 
.    (1 

n 

.85) 
03) 
,72) 
.70) 

.63) 

.82) 
.81) 
.71) 
.80) 
.69) 
.16) 

8.3 
14.0 
16.7 
9.8 

10.2 
12.0 
14.3 
16.5 
21.0 
21.8 

23.5 
24.4 
22.1 
21.9 

19.8 
23.5 
23.8 
17.7 
18.1 
23.5 
23.5 

40, 
46. 
51. 

47 

47 
49 
46 
50 
51 
40 

,0 
8 
2 
,2 

.0 

,6 
,4 
.0 
,6 
.0 

36.4 
33.2 
37.6 
35.2 

36.8 
42.6 
44.6 
48.8 
43.0 
32.8 
37.0 

(  .69) 
(   .94) 
(   .90) 
(  .84) 

(  .70) 
(   .80) 
(1.07) 
(1.11) 
(    .52) 
..(') 

24.2 
26.3 
26.8 
25.3 

24.8 
28.0 
28.3 
24.0 
24.0 
26.3 
29.7 

37.3 
41.2 
43.1 
40.4 

40.2 
43.1 
40.8 
40.8 
35.8 
39.6 

LrP,  clover  , 

LrP,  gypsum,  clover.  . 

L,  alfalfa   . 

LrP,  alfalfa  

.  (i 
.  (i 
.  (i 
(i 
.  (i 

LrPL(8000),  alfalfa.  . 
LrP,  KC1.  alfalfa  
L,  KC1,  alfalfa  

L,  alfalfa  

L,  clover  

LaP,  clover  
RLaP,  clover  

(i, 
.  (i 

46) 
.49) 

21.0 
17.1 

32.6 
38.2 

28.3 
27.2 

Note. — In  1924  the  rotation  on  the  minor  series  at  Joliet  was  changed  to  corn,  barley,  wheat,  and 
biennial  legumes  (red  clover  on  Plots  1  to  4  on  all  series  and  on  Plots  11,  12,  and  13  on  Series  700 
and  900,  alfalfa  on  Plots  5  to  10).  All  plots  had  received  limestone  at  the  rate  of  5,000  pounds  an 
acre  prior  to  1924.  At  that  time  Plot  7  on  all  series  received  8,000  pounds  of  limestone  an  acre. 
Fertilizers  as  designated  in  Table  16  are  applied  at  the  following  annual  acre  rates:  rock  phosphate 
400  pounds,  potassium  chloride  100  pounds,  gypsum  100  pounds.  These  fertilizers  are  applied  twice 
in  the  rotation,  ahead  of  the  wheat  and  corn  crops.  Acid  phosphate  is  applied  for  the  wheat  crop  at 
the  rate  of  250  pounds  an  acre.  The  second  crop  of  red  clover  is  turned  under  on  Plot  13. 

!Plots  11,  12,  and  13  appear  only  on  Series  700  and  900.     2No  alfalfa  seeded  on  Plot  810  in  1926. 


TABLE  21.— KEWANEE  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Wheat 

Series 
200 
Clover 

Series 
300 
Oats 

Series 
400 
Corn 

1 

0   .  . 

32.5 

(0  00) 

62  5 

64  2 

2 

M.  . 

43.6 

(1.40) 

74.1 

69.8 

3 

ML 

.  .     49  2 

(1  79) 

74  7 

73  8 

4 

MLrP  

56  6 

(1.39) 

76  9 

75  2 

5 

0   .  . 

.     37.8 

(0.00) 

57.8 

58  6 

6 

R... 

43.6 

(  .64) 

52.5 

61.8 

7 

RL       

53  2 

(1  13) 

54  4 

66  8 

8 

RLrP  

60.2 

(1.45) 

73.9 

68.2 

9 

RLrPK  .  . 

.     60.4 

(1.70) 

79.1 

82  6 

10 

0  

26.5 

(0.00) 

62.2 

48.8 

TABLE  22.— KEWANEE  FIELD:    MINOR  SERIES 


li 

)25 

19: 

56 

Serial 
plot 
No. 

Soil  treatment 

Series 
500 
Clover 

Series 
600 
Oats 

Series 
700 
Corn 

Series 
800 
Wheat 

Series 
500 
Wheat 

Series 
600 
Clover 

Series 
700 
Oats 

Series 
800 
Corn 

1 

RrP... 

.    (2.22) 

84.8 

80.1 

44.9 

56.0 

(2.29) 

80.6 

75.4 

2 

RaP.  .  . 

,  .    (1.88) 

80.0 

81.4 

46.0 

54.4 

(2.45) 

82.8 

70.6 

3 

RLrP 

.  .   (1.87) 

70.3 

74.8 

37.4 

51.5 

(2.33) 

79.2 

65.8 

4 

RLaP  

.  .    (2.08) 

64.8 

79.7 

45.7 

55.7 

(2.31) 

80.5 

70.0 

1927] 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


29 


TABLE  23.— LAMOILLE  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Series 
Soil  treatment                               100 
Corn 

Series 
200 
Wheat 

Series 
300 
Oats 

Series 
400 
Corn 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0.  .. 

.     51.0 

45.4 
50.2 
47.0 
47.5 

42.8 
48.4 
45.8 
49.8 

50.2 
39.0 

57.7 
77.0 
82.3 
81.6 

65.9 
68.3 
76.9 
76.9 

69.7 
52.3 

41.5 
54.9 
55.0 
57.0 

45.1 
56.6 
61.7 
63.5 

61.0 
47.1 

M 

60.8 

ML... 

59.0 

MLrP 

58  9 

0 

.     46.4 

R  

54.0 

RL.  .  . 

53.8 

RLrP 

55  .  5 

RLrPK 

0  

.     57.5 

49.3 

TABLE  24.—  LAMOILLE  FIELD: 

MINOR 

SERIES 

Serial 
plot 
No. 

Soil 

1925 

1926 

Series       Series      Series       Series       Series 
treatment             500           600           700          800           500 
Clover      Wheat      Corn        Corn        Corn 

Series       Series 
600           700 
Soybeans  Wheat 

Series 
800 
Corn 

1 
2 
3 
4 

0..  . 

.      (2.55)        25.2         46.0         59.6 

50.8 
56.0 
56.6 
47.2 

2.29        42.0 
2.36        42.2 
2.25         39.5 
2.21         42.5 

41.2 
45.0 
50.8 
52.4 

M.. 

(2.30)        32.8        65.4         70.4 

ML... 

.      (1.68)        31  8         54  6        75  6 

MLrP. 

(1.65)        33.5         57.6         80.8 

TABLE  25.—  LEBANON  FIELD: 

MAIN  SERIES 

Serial 
plot 
No. 

Series 
Soil  treatment                                 100 
Wheat 

Series 
200 
Wheat 

Series 
300 
Soybeans 

Series 
400 
Corni 

1 

2 
3 
4 

5 
6 
7 
8 

9 
10 

0   .  . 

.     32.0 

18.0 
36.5 
42.8 
42.5 

22.1 
23.7 
33.9 
37.7 

40.2 
26.2 

(1.02) 
(1.30) 
(1.91) 
(1.32) 

(1.04) 
(1.15) 
(1.38) 
(1.46) 

(2.04) 
(1.44) 

10.6 
19.8 
35.8 
27.8 

7.0 
30.8 
27.8 
36.6 

52.4 
12.4 

M.  . 

46.5 

ML.... 

57.2 

MLrP. 

49.5 

0... 

.     35.0 

R... 

33.5 

RL     .  . 

46  8 

RLrP.  . 

43.6 

RLrPK 
0  

.     43.8 

30.8 

•Chinch  bugs  injured  the  corn  on  Series  400. 


TABLE  26.— LEBANON  FIELD:     MINOR  SERIES 


1925 

1926 

Serial 
plot 
No. 

Soil  treatment 

Series 
500 
Corn 

Series 
600 
Oats 

Series 
700 
Wheat 

Series 
500 
Oats 

Series 
600 
Wheat 

Series 
700 
Corn 

1  W 

0   .  . 

.  .     69  0 

57  8 

21.8 

46.9 

42.0 

45.4 

1  E 

aP  

59  .  8 

65.6 

26.2 

44.7 

40.2 

46.2 

2  W 

M.. 

.     77.8 

40.6 

20.5 

55.0 

47.3 

60.4 

2  E 

MaP  

..     79  0 

69  1 

24.5 

60.9 

50.7 

54.0 

3  W 

ML... 

.     95  6 

61.6 

22.7 

42.8 

50.5 

63.4 

3E 

MLaP  

89.0 

68.8 

24.7 

68.4 

46.8 

60.0 

4  W 

MLrP... 

.     88  8 

64.1 

28.0 

53.1 

52.0 

99.6 

4E 

MLrP  

81.0 

69.1 

24.3 

42.8 

47.7 

86.2 

30 


BULLETIN  No.  296 


[August, 


TABLE  27.— LEBANON  FIELD:    MINOR  SERIES 


Serial 

1£ 

125                                           1 

926 

plot 
No. 

Soil  treatment 

Series  800 
Potatoes 

Series  9002      Series  800 
Wheat 

Series  900 
Potatoes 

1 

M.  . 

20.7 

59  0 

39  3 

2 

aP  (200)  .     . 

23  3 

59  0 

38  3 

3 

rP  (400)  

20.0 

55  3 

32  3 

4 

aP  (200),  kainit  (200)  

17.3 

56  3 

25  3 

5 

rP  (400),  kainit  (200)  

17.7 

57.0 

29  3 

6 

Straw  

40.7 

55.3 

58  7 

7 

Straw,  aP  (200)  

65.7 

...                  58  0 

67  0 

8 

Straw,  rP  (400)  

58.3 

....                  54.3 

58  7 

9 

Superphosphate  (100). 

12  3 

61  3 

37  0 

10 

Non-acid  phosphate  (200)  

11.0 

53  7 

47  3 

Note. — In  1925  Series  800  and  900  were  laid  out  on  land  which  had  received  8,000  pounds  of 
limestone,  2,000  pounds  of  rock  phosphate,  and  15  tons  of  manure  an  acre  in  1911.  The  land  has 
grown  alfalfa  almost  continuously  since  that  time.  A  rotation  of  wheat  (sweet-clover  catch  crop) 
and  potatoes  is  planned.  Fertilizers  are  applied  as  indicated  in  Table  25.  The  phosphates  are  sup- 
plied annually,  rock  phosphate  400  pounds,  acid  phosphate  200  pounds,  superphosphate  100  pounds 
and  non-acid  phosphate  200  pounds  an  acre.  Kainit  200  pounds  an  acre  is  applied  for  each  potato 
crop.  Two  tons  of  manure  an  acre  is  applied  for  potatoes.  Straw  is  applied  as  a  mulch  when  the 
potatoes  are  coming  thru  the  ground. 

2Series  900  was  not  under  soil  treatment  in  1925. 

TABLE  28.— McNABB  FIELD 


Serial                                                                            Series  100 
plot  No.                       Soil  treatment                             Wheat 

Series  200 
Oats 

Series  300 
Corn 

Series  400 
Soybeans 

1 
2 
3 
4 
5 

R... 

34.7 

79.1 
80.3 
68.8 
88.4 
79.4 

74.8 
79.0 
80.0 
85.6 
83.8 

(1.79) 
(1.86) 
(1.86) 
(2.09) 
(1.94) 

RrP 

41.5 

0   .            

45.0 

MrP  

46.0 

M  

45.0 

TABLE  29.— MINONK  FIELD 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Corn 

Series  200 

Series  300 

Series 
400 
Corn 

Wheat 

Stubble 
Clover 

Oats 

Stubble 
clover 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0.  .  . 

.     55.4 

36.6 
38.2 
37.0 
38.8 

35.6 
37.6 
31.1 
37.1 

34.7 
26.8 

52.8 
66.6 
61.4 
63.3 

55.5 
48.4 
47.8 
52.5 

53.4 
46.3 

(   .53) 
(   .67) 
(   .82) 
(  .85) 

(   .77) 
(1.02) 
(   -97) 
(1.06) 

(1.24) 
(   .59) 

45.3 
63.5 
58.1 
59.1 

44.8 
55.7 
64.2 
69.0 

57.5 
52.6 

M 

.     72.0 

ML  

.  ..     67.4 

MLrP  

...     69.0 

0 

53  0 

R     .   . 

71.6 

(1.22) 
(1.20) 
(1.36) 

(1.59) 

RL     

.  ..     68.2 

RLrP  

...     78.0 

RLrPK  .  .  . 

.      69.6 

0  

...     49.6 

TABLE  30.— MT.  MORRIS  FIELD:  MAIN  SERIES 


Serial 
plot 
No. 


Soil  treatment 


Series 

100 

Wheat 


Series 

200 
Clover 


Series 
300 
Oats 


Series 
400 
Corn 


1 

2 
3 

4 

6 
6 
7 
8 

9 
10 


0 

M 

ML... 
MLrP. 


0 

R 

RL... 
RLrP. 


29.2 
33.2 
42.7 
39.8 

29.1 
31.2 
38.4 
42.0 


RLrPK . 
0... 


(  .50) 
(1.63) 
(2.75) 
(2.89) 

(  .38) 
(  .51) 
(1.97) 
(2.38) 


45.6         (2.68) 
25.4         (   .29) 


50.6 
61.9 

74.8 
72.7 

33.6 
39.8 
62.5 
70.0 

69.7 
36.9 


46.9 
59.6 
66.2 
61.8 

41.1 


65.2 

65.7 
38.2 


1927] 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


31 


TABLE  31.— MT.  MORRIS  FIELD:     MINOR  SERIES 


1925 

19261 

Serial 
plot 
No. 

Soil  treatment 

Series 
500 
Alfalfa 

Series 
600 
Barley 

Series 
700 
Corn 

Series 
800 
Alfalfa 

Series 
500 
Alfalfa 

Series 
600 
Timothy 
clover 

Series 
700 
Barley 

Series 
800 
Corn 

1 
2 
3 

4 

0   .  . 

.      (0.00) 

33.8 
43.9 
71.9 
71.5 

76.6 
84.8 
83.4 
86.0 

(2.62) 
(3.13) 
(4.03) 
(4.14) 

(1.93) 
(2.21) 
(3.90) 
(3.94) 

(1.46) 
(2.01) 
(2.45) 
(2.54) 

51.9 
60.4 
58.5 
62.5 

57.8 
64.6 
62.0 
65.0 

M.  . 

.      (0.00) 

ML  .. 

(1.38) 

MLrP  :  .  . 

.      (1.24) 

'In  1926  the  rotation  was  changed  to  corn,    barley,   mixed  hay    (timothy,  alsike  clover)  and 
alfalfa. 


TABLE  32.— NEWTON  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series  100 
Wheat 

Series  200 
Oat  hay 

Series  300 
Corn 

Series  400 
Soybeans 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0     . 

3 
3 
.3 
3 

0 
,7 
.3 
.2 

.3 
3 

( 
( 

[ 

( 

( 

.15) 
.30) 
.55) 
.55) 

.18) 
.25) 
.55) 
.55) 

.75) 
.10) 

10. 
22. 
27 
23 

6. 
7. 
11 
11. 

25, 
13 

8 
2 
8 
0 

6 
6 
6 
2 

6 
,4 

(   . 

(li 
(1. 

(   . 
(  ". 

(1. 

60) 
95) 

22) 
25) 

45) 
60) 
78) 
90) 

20) 
50) 

M.  . 

2 

ML     . 

21 

MLrP  

.     31 

0  .  . 

1, 

R... 

5 

RL.  .. 

12 

RLrP  

.      ...     25 

RLrPK... 

30 

0  

TABLE  33.— NEWTON  FIELD:    LIME  EXPERIMENT 


High-calcium  lime 

Dolomitic  lime 

Serial 
plot 
No. 

Limestone 
Soil  treatment                 fineness 
(meshes 
per  inch) 

Series 
500 
Wheat 

Series 
700 
Corn 

Series 
900 
Sweet 
clover 

Series 
600 
Wheat 

Series 
800 
Corn 

Series 
1000 
Sweet 
clover 

1 

2 
3 
4 
5 
6 

7 

8 
9 
10 
11 
12 

13 

14 
15 
16 
17 
18 

19 

RrPK  

...      19.8 

22.8 

22.4 
22.1 
21.4 
17.1 
9.4 

17.2 

8.2 
6.9 
5.4 
6.5 
8.1 

22.2 

2.0 
3.0 
1.9 
2.0 
3.3 

18.2 

0.00 

.38 
.42 
.67 
.92 
.92 

0.00 

.25 
.00 
.12 
.12 
.33 

0.00 

1.38 
1.92 
2.08 
1.38 
1.38 

0.00 

17.2 

34.0 
31.2 
39.0 
25.7 
26.7 

11.5 

21.5 
19.0 
19.8 
20.5 
25.3 

17.0 

31.5 
30.8 
31.7 
33.0 
37.7 

16.0 

10.1 

2.6 
10.2 
4.9 
3.1 
3.0 

26.2 

10.4 
13.6 
8.6 
4.3 

7.2 

22.3 

4.4 
5.6 
5.5 
2.5 
4.4 

21.3 

0.00 

.92 
.75 
1.00 
1.00 
1.25 

0.00 

1.92 
1.46 
1.29 
1.17 
1.33 

0.00 

1.42 
1.12 
1.33 
1.42 
2.62 

0.00 

RrPKL    . 

36  8 

RrPKL  .  . 

4  to  10  

.     35.0 

RrPKL.  . 

....     10  down  

...     34.0 

RrPKL    . 

....     50  down  .  .  . 

32  0 

RrPKL  

....     Burnt  

...     30.0 

RrPK  

...     15.8 

RrPKL 

27  3 

RrPKL    . 

....       4  to  10. 

28  5 

RrPKL.  . 

....      10  down  

...     29  .  3 

RrPKL 

50  down.  .  . 

30  0 

RrPKL  

....     Burnt  .  .  . 

31  5 

RrPK  

...      12  3 

RrPKL  .  . 

4  down  

.     33.5 

RrPKL  . 

4  to  10. 

30  3 

RrPKL.  . 

....     10  down  

...     35  5 

RrPKL.  .  . 

....     50  down  

...     36.7 

RrPKL  

....     Burnt  

.     37  2 

RrPK  

...      11.3 

Note. — Lime  materials  were  applied  in  amounts  equivalent  to  pure  calcium  carbonate  as  follows: 
to  Plots  2  to  6,  500  pounds  an  acre  a  year;  to  Plots  8  to  12,  1,000  pounds;  to  Plots  14  to  19,  2,000 
pounds.  The  total  amounts  applied  since  1913  were  3,000  pounds,  6,000  pounds  and  12,000  pounds 
respectively.  No  more  will  be  applied  until  there  appears  to  be  a  need  for  it. 


32 


BULLETIN  No.  296 


[August, 


TABLE  34.— OBLONG  FIELD:    MAIN  SERIES 


1925 

1926 

Serial 
plot 
No. 

Series 
Soil  treatment               100 
Soybeans 

Series 
200 
Soybeans 

Series 
300 
Corn 

Series 
400 
Wheat 

Series 
100 
Wheat 

Series 
200 
Timothy 

Series 
300 
Oats 

Series 
400 
Corn 

SOUTH  HALF 


1 

0... 

( 

.94) 

(1.73) 

12.6 

1.8 

12.5 

( 

.40) 

5.6 

18.8 

2 

M  

( 

.95) 

(1.68) 

32.8 

4.8 

22.7 

< 

.62) 

6.3 

27.0 

3 

ML  

(1 

.02) 

(3.35) 

50.2 

22.0 

38.7 

(1 

.60) 

9.1 

45.8 

4 

MLrP  

(1 

.52) 

(3.25) 

49.2 

24.7 

41.7 

(1 

.75) 

11.3 

50.4 

5 

0... 

( 

.82) 

(1.13) 

24.4 

4.0 

13.2 

r 

.45) 

11.9 

15.8 

6 

R  

( 

.91) 

(1.23) 

30.2 

8.7 

19.5 

I 

.45) 

9.1 

30.6 

7 

RL  

(1 

.36) 

(3.09) 

38.6 

18.5 

24.2 

(1 

.10) 

11.9 

33.0 

8 

RLrP  

(1 

.39) 

(3.03) 

47.2 

26.3 

41.3 

(1 

.32) 

11.9 

31.4 

9 

RLrPK  .  . 

(1 

.62) 

(3.45) 

58.8 

32.7 

41.7 

CI 

.55) 

17.2 

51.6 

10 

0  

( 

.80) 

(2.56) 

26.0 

6.5 

5.5 

( 

.12) 

5.9 

27.8 

NORTH  HALF 


1 

RLaP... 

.      (1 

.00) 

(2.14) 

12.6 

4.8 

20.8 

( 

.70) 

5.9 

31.2 

2 

MLrP  

.      (1 

.05) 

(1.84) 

31.6 

8.0 

29.7 

(1 

.00) 

14.7 

35.8 

3 

MLbP  

.      (1 

.55) 

(3.76) 

41.4 

25.5 

46.3 

(1 

.60) 

9.7 

57.0 

4 

MLrP  

.      (1 

.67) 

(3.55) 

31.0 

36.0 

47.7 

(1 

.78) 

10.9 

53.6 

5 

RL,  di-calcium  P  .  .  . 

( 

.93) 

(1.45) 

16.0 

10.0 

29.2 

/ 

.75) 

10.0 

25.6 

6 

RLrP  

.      ( 

.98) 

(1.47) 

28.6 

13.2 

25.8 

f 

,82) 

6.3 

39.8 

7 

RLbP  

.      (1 

.48) 

(3.36) 

46.0 

22.7 

32.0 

(1 

.60) 

11.9 

39.6 

8 

RLrP  

.      (1 

.36) 

(3.41) 

40.0 

31.5 

38.0 

(1 

.65) 

12.2 

38.8 

9 

RLrPK  

.      (1 

.69) 

(3.52) 

55.2 

26.3 

43.8 

(2 

.02) 

14.1 

52.6 

10 

RL,  non-acid  P  .  .  .  . 

.78) 

(2.45) 

31.8 

12.7 

21.2 

28) 

5.9 

51.4 

Note. — In  1925  these  series  were  divided  into  north  and  south  halves  for  the  purpose  of  studying 
the  relative  values  of  different  phosphorus  carriers.  The  plots  on  the  south  halves  of  all  series,  as 
well  as  Plots  4,  8,  and  9  on  the  north  halves,  continue  under  the  original  soil  treatment. 

On  the  north  halves  the  new  soil  treatment  is  as  follows:  an  initial  application  of  4,000  pounds 
of  limestone  an  acre  to  Plots  1,  2,  5,  6,  and  10,  subsequent  applications  to  be  governed  by  the  clover 
requirements.  Rock  phosphate  to  Plots  2  and  6,  1,000  pounds  an  acre  ahead  of  wheat  and  600  pounds 
ahead  of  corn.  Bone  meal  to  Plots  3  and  7,  500  pounds  an  acre  ahead  of  wheat  and  300  pounds 
ahead  of  corn.  Acid  phosphate  to  Plot  1,  di-calcium  phosphate  to  Plot  5  and  non-acid  phosphate 
to  Plot  10  in  the  same  amounts  and  applied  for  the  same  crop  as  the  bone  meal.  Residues  to  be 
turned  under  on  Plots  1,  5,  and  10  as  on  the  original  residue  plots. 


TABLE  35.— OBLONG  FIELD:    LIME  EXPERIMENT! 


Ji-inch 

M-  to  i1,,  -inch 

A  -inch 

^j-inch 

Burnt  lime 

Kind  of  lime 

sn 

sn 

' 

material 

Sweet 
clover 

Sweet 
clover 

Sweet 
clover 

Sweet 
clover 

clover 

High  calcium  

(1  50) 

(     44) 

(1  48) 

(1.58) 

(1.3S) 

Dolomitic  

(1.10) 

(    .26^ 

(1.16) 

(1.38) 

(1-34) 

'This  experiment  is  similar  to  the  Newton  lime  experiment  except  that  the  lime  materials  are 
applied  at  a  uniform  rate  (9,000  pounds  calcium  carbonate  equivalent  per  acre) .  Each  yield  is  the 
average  of  four  replicates. 


1927} 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


33 


TABLE  36.— ODIN  FIELD:     MAIN  SERIES 


Serial 
plot                              Soil  treatment 
No. 

Series 
100 
Corn 

Series 
200 
Soybeans 

Series 
300 
Wheat 

Series 
400 
Sweet 
clover 

1     0.  .  . 

18.9 

(   .38) 

9.2 

0  00 

2     R    

.      13  8 

(     38) 

14  8 

0  00 

3     RL... 

12  ft 

(    .38) 

41  3 

1   12 

4     RLbP... 

15.4 

(   .45) 

44.2 

.71 

5     RLbPK  

14  4 

(     94) 

46  8 

4  00 

6     0... 

14.7 

(     44) 

5  5 

0  00 

7     R.  . 

14.5 

(   .52) 

6.1 

0  00 

8     RL   .  . 

11   1 

(     39) 

34   1 

33 

9     RLbP... 

11  5 

(   .48) 

44  4 

22 

10     RLbPK  

19.4 

(    .69) 

43.3 

.82 

TABLE  37. — ODIN  FIELD:    LIME-PHOSPHORUS  EXPERIMENT 


Light  lime 

Heavy  lime 

Serial 
plot                              Soil  treatment 
No. 

Series 
500 
Corn 

Series 
600 
Wheat 

Series 
700 
Corn> 

Series 
MM) 
Wheat 

1     LeLbPK  .  . 

.    .     19  2 

34.3 
12.0 
32.5 

22.5 
6.3 
24.2 

4.0 
5.6 
1.6 

2.4 
2.2 
3.2 

28.7 
29.3 
29.2 

24.5 
20.3 
22.0 

2     LcLK... 

18.0 

3     LeLaPK  

17.4 

4     LeLrPK... 

17.2 

5     LeLK... 

.     13  6 

6     LeLsPK  

15.8 

'Corn  damaged  by  chinch  bugs. 


TABLE  38. — ODIN  FIELD:    SWEET  CLOVER  ROTATION  EXPERIMENT 


Rotation 

Soil 
tre  atment 

Corn" 

Soybeans 

Wheat 

Sweet 
Clover 

3-year  sweet  clover  rotation  .  .  . 
4-year  sweet  clover  rotation  .  .  . 

RLbP 
.  .  .     RLbP 

6.0 
6.0 

(1.25) 
(1.41) 

42.2 
50.0 

4!66 

'Corn  damaged  by  chinch  bugs. 


TABLE  39.— OQUAWKA  FIELD 


Serial                                                             Series 
plot                 Soil  treatment                   100 
No.                                                        Soybeans 

Series 
200 
Alfalfa 

Series 
300 
Corn 

Series           Series 
400               500 
Wheat   Sweet  clover 

Series 
600 
rye 

1 
2 
3 
4 

5 
6 
7 
8 

9 
10 

0.  .  . 

7 

.5 
.8 
.2 
.9 

.7 
1 
6 
.6 

.5 
.9 

3 

4 
5 

2 
3. 
4 
4 

4 

2 

.98 
.80 
.89 
.11 

97 
40 
37 
.60 

.57 
.24 

25 
27 
58 
56 

15. 
14. 
42. 
47 

41 
13 

.3 

.9 
.6 
0 

6 
8 
4 
0 

.7 
.1 

20 
24 
32 
32 

20. 
24. 
29. 
31. 

32 

19 

.3 
0 
,2 
,5 

4 
3 

0 

8 

7 
2 

0.00 
0.00 
.29 
.38 

0.00 
0.00 
.29 
.21 

.21 
0.00 

14.1 
17.7 
26.3 
26.6 

10.9 
14.7 
21.3 
21.9 

22.1 
6.4 

M  

11 

ML... 

17 

MLrP  

13 

0... 

6 

R  

8 

RL  

12 

RLrP  

12 

RLrPK  .  . 

14 

0  

6 

34  BULLETIN  No.  296  [August, 

TABLE  40.— PALESTINE  FIELD:     MAIN  SERIES 


Serial 
plot                 Soil  treatment 
No. 

Series 
100 
Soybeans 

Series 
200 
Corn 

Series  300 

Series 
400 
Wheat 

Series 
500 
Wheat 

Oats 

Oat 
hay1 

1 

2 
3 
4 

5 
6 

7 
8 
9 
10 

LeL.  . 

.     (1. 

,50) 
.55) 
65) 
,72) 

,40) 
.55) 
.05) 
.85) 
.85) 
.30) 

23.4 
32.2 
33.0 
34.6 

28.0 
30.6 
37.6 
33.8 
32.4 
28.0 

14. 
14, 
11 
11 

12 
14 
13 
16 
15 
12 

4 
1 
3 
3 

2 

,7 
.4 
.3 
3 
.5 

u' 

(1 

,75) 
,00) 
,75) 
,38) 

,38) 
.38) 
.00) 
.62) 
.85) 
.65) 

12. 
12, 
11 
11 

9 
11 
12 
12 
10 
8, 

2 
2 
5 
0 

3 

,8 
,0 
3 
2 

,7 

6.3 
7.0 
8.0 
12.2 

9.7 
11.7 
12.7 
14.5 
14.2 
8.8 

LeLM.  . 

.  .     (1 

LeLMaP  .      . 

.     (1 

LeLMrP  

•  •     (1 

LeL.. 

.     (1 

LeL,  KC1 

.     (1 

LeLaP,  KC1  .  . 

.  .     (2 

LeLrP,  KC1  

..     (1 

LeLrP,  kainit 

.     (1 

0  

..      (1 

Note. — In  1926  the  rotation  was  changed  to  wheat  (Hubam  and  alsike  clover  catch  crop),  wheat 
(sweet-clover  catch  crop),  corn,  soybeans,  alfalfa.  Fertilizer  will  be  applied  as  follows:  Limestone, 
8,000  pounds  an  acre  to  Plots  1,  2,  5,  6.  Subsequent  applications  of  limestone  will  be  governed  by 
the  requirement  of  the  legume  crops.  KC1  will  be  applied  at  the  rate  of  250  pounds  an  acre  for  the 
corn  crop,  the  kainit  will  be  applied  at  the  rate  of  1,000  pounds  an  acre  ahead  of  the  second  wheat 
crop,  acid  phosphate  will  be  applied  at  the  rate  of  300  pounds  an  acre  for  each  wheat  crop  and  150 
pounds  for  the  corn  crop.  Rock  phosphate  will  be  applied  at  the  rate  of  600  pounds  an  acre  for  each 
wheat  crop  and  300  pounds  for  the  corn  crop.  Plots  2,  3,  and  4  will  receive  manure  in  amounts  equiv- 
alent to  the  crops  removed  from  Plot  2  of  all  series,  applied  for  corn. 

'Oats  seeded  as  a  nurse  crop  for  alfalfa  which  was  seeded  after  harvest. 


TABLE  41.— PALESTINE  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
600 
Wheat 

Series 
700 
Corn 

Series 
800 
Wheat 

Series 
900 
Oat  hay 

1 

LeLaP... 

.    10.1 

25.4 

5.9 

(    .16) 

2 

LeLrP  

8.0 

22.2 

9.1 

(  -16) 

3 

LeL  

.    10.7 

26.2 

10.1 

(   .14) 

4 

LeL,  flowers  of  sulfur  

...     9.6 

23.2 

8.0 

(   .13) 

5 

LeLrP,  flowers  of  sulfur  

10.1 

18.1 

8.0 

(   .19) 

6 

LeL  

.     8.5 

17.9 

10.1 

(   .16) 

7 

LeL,  gypsum  

10.1 

20.0 

8.0 

(   .25) 

8 

LeLrP,  gypsum  

10.1 

21.1 

9.6 

(    .22) 

Note. — These  series  were  laid  out  in  the  fall  of  1925.  A  rotation  of  wheat  (sweet  clover),  corn, 
and  alfalfa  will  be  grown,  wheat  and  corn  alternating  on  two  series  for  three  years,  while  alfalfa  oc- 
cupies the  third  series  for  the  same  period.  The  following  plan  of  soil  treatment  was  adopted.  Lime- 
stone, an  initial  application  of  6,000  pounds  an  acre,  future  applications  to  be  governed  by  the  crop 
needs.  Rock  phosphate  600  pounds  an  acre  for  wheat,  300  pounds  for  corn,  and  600  pounds  for  the 
second  crop  of  alfalfa.  Acid  phosphate,  300  pounds  an  acre  for  wheat,  150  pounds  for  corn  and  300 
pounds  for  the  second  crop  of  alfalfa.  Flowers  of  sulfur,  50  pounds  an  acre  for  wheat  and  50  pounds 
for  the  second  crop  of  alfalfa.  Gypsum,  300  pounds  an  acre  for  wheat  and  300  pounds  for  the  second 
crop  of  alfalfa. 


TABLE  42.— SIDELL  FIELD 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Soybeans 

Series 
200 
Alfalfa 

Series 
300 
Oats 

Series 
400 
Corn 

Series 
500 
Wheat 

1 

0... 

.    1.30 

1.39 

45.2 

57.5 

42.2 

2 

M  

1.44 

1.47 

49.4 

59.8 

45.2 

3 

ML.... 

1.38 

2.69 

54.5 

68.9 

40.0 

4 

MLrP  

1.48 

3.60 

57.0 

62.1 

41.8 

5 

0.  .  . 

.   1.12 

1.21 

40.0 

45.9 

29.6 

6 

R.... 

1.25 

1.24 

36.6 

57.4 

32.8 

7 

RL  

.    1.42 

2.19 

53.6 

58.6 

34.5 

8 

RLrP  

1.78 

3.25 

62.8 

52.1 

40.8 

9 

RLrPK  .  . 

.   1.72 

3.95 

73.8 

52.8 

53.2 

10 

0  

1.32 

1.98 

40.9 

41.8 

33.2 

1937] 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


35 


ls§ 

° 


As  S  >> 


p 

PI 


ceooo*     «<NOO     o* 

NO*N       ®*CO®       —  C 

—     c      c      fic 

----"        T        - 

£°.5?S   °,SSS3   SgJ 

CO*®®       CO*COCO      ®CO 

o    -3     °     S 
1111 

_S                a;       c« 

2S38    225oS    SS 

IcSSS   22SS   Sw 

1    »    =3     T 

J.-s  I  i 
fill 

O  O  co  co      OO  —  *      00  O 

SCO®     QO**     cot>- 
OCOK5       OOCOt-      COCM 

O      -S      T3      o 

OO               OO                   O 

oo           oo           — 

3     *     §    8 

•§    «   •§  «•* 

£      s*^  T" 

2        $      ^  3  * 

3°,§§     gtggco     ££ 

N**S      §"*"       SS 

H     £     ^8.| 

•* 

§  — 

-<"  -  7  >  t  t  -       •  ~  X   _  ;  -        "IT; 

S1    5    -^  S*® 

«j             °*  3K 

v>3     5  So 

CMCM              "CMCM       M 

*OCMO       OOOCMO       00* 

^OCOM*      rci^oo^^      ^j*c*< 

^CCCO       ^Hr^MC'S       C(5'H 
OOOOO       (NM^CM       <*00 

l-ga    |B| 

c  ^  s     5*o 
.2  "2^    .2  SK 

"S?§"    SW8:S   23 

*C  Ci  Cs  Is*      00  Is*  00  O      00  1* 

CMiO*®       t^CMCMO       Nin 

""**  fis55  ** 

8*  *  l""»       —  CM  O  00        /   _ 
*CMCO     ••rcoo®     oo 

fo 

8-    —  r       z  -  r  i  -      OO 
Sooo     ooj»co    t^o 

•§>s  'i'is 

O       CMC*                 —  —       —  O 

(J 

O      —CM      OO      —      —  O 

as  w—      "§  2  * 

33 

l«l      ||i 

88S5!   88S£   S8 

92 

88S*   88So5   *8 

^•3^    -5^2 

CO——      OO—           —  O 

w 

oo—  —    oo—        —  o 

2*^  c      §  *  o 

NU5U5CO       COCOOCM       COCM 

ill  iff 

NOON'*       SMOOCM       *CO 

f  ®00®       —  OCM®      CMN 

j|j|l 

OXCOU5       —  —  30  —       NW 

00  ®  ®  O)         f—  1  ®  rH  CO         d  ^ 

"3  -^  d.**"n      S 

*u  ei  4>  "3  •••  *^  ^ 
"3  —  ^      oo  c 

:  :  :  :     :  :  :  :    8 

||Ml| 

|||l|i|| 

o'SsS    o'«««    pj0 

;  •  •  :      '.'.'.'.$£ 

'    *%^         '    'P^OH      P^Pn 
—  NW«       U5®t»00       CSO 

Note.—  In  1924 
series  continue  unde 
No  more  rock  p 
acre.  The  same  ho! 
On  the  east  hah 
at  the  following  ann 
The  minimum  a 
been  applied  in  1924 
Substitute  for 

36 


BULLETIN  No.  296 


[August, 


TABLE  44.— SPARTA  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series              Series 
100                    200 
Oat  hay1        Soybeans 

Series               Series 
300                  400 
Corn     Sweet  clover 

1        0.  .. 

,  .  .(   .02) 

(   .81) 
(   .81) 
(1.40) 
(1.40) 

(  .56) 
(    .56) 
(1.29) 
(1-29) 

(1.57) 
(    .64) 

21.0 
.29.6 
29.2 
36.2 

10.8 
23.4 
31.2 
27.2 

29.8 
3.8 

0.00 
0.00 
1.60 
2.10 

0.00 
0.00 
2.00 
1.90 

3.58 
0.00 

2         M  

(   .40) 

3         ML... 

(   .85) 

4         MLrP  

(   .68) 

5        0.  .. 

...(   .02) 

6         R  

(   .03) 

7         RL  .  .  . 

(   .03) 

8        RLrP  

(   .25) 

9         RLrPK  .  . 

...(   .90) 

10         0  

....(   .02) 

'Substitute  for  wheat. 

TABLE  45.—  SPARTA 

FIELD:     MINOR  SERIES 

Serial 
plot 
No. 

Soil  treatment 

Series 
500 
Timothy 

Series 
600 
Wheat 

Series 
700 
Corn 

Series 
800 
Cowpeas 

1         0.  .. 

...(    .28) 

21.2 
24.0 
45.5 
43.0 
39.5 
11.3 

23.7 
37.2 
44.4 
41.8 
39.4 
18.8 

(   .85) 
(   .71) 
(   .80) 
(   .71) 
(    .94) 
(   .85) 

2         M  

(   .55) 

3         ML... 

(   .87) 

4         MLrP.  .  . 

..  .(1.00) 

5         MLrPK. 

.  .  .    (   .96) 

6         0  

....(   .32) 

TABLE  46.—  SPARTA 

FIELD:    MINOR  PLOTS 

Plot  A 

Plot  B 

Plot 

C 

Soil           1925 
treatment  Wheat 

MLrPK....  21.2 
MrPK.  .      .    14.5 

1926 

1925 
Corn 

58.7 
38.2 

1926 
Corn 

41.9 
27.6 

1925 

Alfalfa 

(3.07) 
(1.66) 

1926 
Alfalfa 

(    .54) 
(   .10) 

Wheat             Stubble 
clover 
13.3               (   .60) 
1.8               (0.00) 

RL  

Soil  treatment 

Plot  D 

Plot  E 

Plot 

F 

1925                  1926 
Alfalfa             Alfalfa 

1925 
Wheat 

1926 
Sweet 
clover 

1925 
Oats 

1926 
Wheat 

MLrPK.. 

,..(2.50)               (2.78) 

i7.'s 

i.'25 

i9.'2 

's'.Q 

MrPK    . 

.  .      (1  72)               (   .78) 

RL  

TABLE  47.—  SPRING  VALLEY  FIELD: 

MAIN  SERIES 

Serial 
plot                    Soil 
No. 

Series  100 

Series 
200 
Clover 

Series 
300 
Oats 

Series 
400 
Corn 

treatment                 Wheat 

Stubble 
clover 

1         0 

50  3 

(   .97) 
(2.46) 
(2.73) 
(2.61) 

(1.83) 
(   .98) 
(   .81) 
(   -66) 

(   .95) 
(1.16) 

28.1 
36.9 
51.6 
55.9 

42.2 
45.6 
54.7 
56.3 

60.3 
53.8 

40.6 
44.8 
53.2 
58.2 

47.8 
54.2 
50.2 
51.4 

64.4 
59.0 

2         M    . 

...  49  .  7 

3         ML 

41  3 

4         MLrP. 

46  5 

5        0.  .  . 

.   45.0 

6         R.... 

..   53.2 

(   .85) 
(   .88) 
(   .90) 

(1.21) 

7         RL 

47.8 

8        RLrP  

52.3 

9         RLrPK  .  . 

.  .    52  .  3 

10        0  

41.3 

1927] 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


37 


TABLE  48.— SPRING  VALLEY  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Series  500 

Series  600 

Serie 

s700 

Series  800 

Soil  treatment 

1925 
Oats 

1926 
Corn 

1925 
Alfalfa 

1926 
Alfalfa 

1925 
Corn 

1926 
Corn 

1925 
Corn 

1926 
Oats 

1 
2 
3 
4 

0.  .. 

.     55.0 

51.8 
59.4 
67.4 
67.8 

(1.95) 
(1.63) 
(2.28) 
(2.29) 

(3.55) 
(3.61) 
(3.83) 
(4.10) 

55.4 
60.6 
63.8 
67.6 

51.6 
49.8 
56.4 
61.2 

55.2 
66.4 
83.0 
71.4 

51.3 
70.6 
71.9 
67.8 

M 

.     73.8 

ML... 

.     76.9 

MLrP  

.     57.2 

(See  page  38  for  Table  49,   Toledo  field) 


TABLE  50.— UNION VILLE  FIELD:     MAIN  SERIES 


192f 

192 

B 

Serial 
fi? 

Soil  treatment 

Series 
100 
Soybean 

Series      ! 
200 
Seed 
cotton 
Ibs. 

Series 
300 
Corn 

Series 
400 
Oats» 

Series 
100 
Oats» 

Series 
200 
Soybeans 

Series 
300 
Seed 
cotton 
Ibs. 

Series 
400 
Corn 

WEST 

HALF 

1 

0.    . 

.      (1.74) 

260 

14.2 

11.6 

28.1 

(  .82) 

60 

13  2 

2 

M.  . 

.  .  .      (1.35) 

450 

16.0 

13.1 

25.9 

(1.10) 

91 

22.4 

3 

ML     . 

.  .  .     (1.89) 

620 

31.4 

22.8 

44.4 

(1.87) 

410 

32  6 

4 

MLrP  

...     (1.81) 

700 

29.8 

20.9 

44.1 

(2.00) 

310 

36.6 

5 

0   .  . 

.     (1.00) 

280 

5.2 

11.6 

18.8 

(  .85) 

52 

13.4 

6 

R... 

...      (1.19) 

260 

11.0 

10.9 

22.5 

(  .90) 

52 

17.6 

7 

RL         

...      (1.59) 

310 

39  6 

17  5 

42  8 

(1.54) 

180 

30  8 

8 

RLrP  

.  .  .      (1.72) 

510 

41.4 

25.3 

48.1 

(1.84) 

85 

31  8 

9 

RLrPK  .  . 

.      (1.88) 

780 

42.8 

24.7 

54.1 

(2.11) 

378 

37.6 

10 

0  

.  .  .     (1.00) 

150 

9.4 

8.1 

18.4 

(  .65) 

208 

13.8 

EAST 

HALF 

1 

L... 

.      (1.08) 

250 

12.6 

9.7 

17.5 

(1.06) 

65 

14.8 

2 

MLrP.    . 

.  .  .      (1.36) 

540 

20.0 

15.0 

25.9 

(1.41) 

195 

24.8 

3 

ML,  KC1 

(1  96) 

590 

24  0 

25  9 

45  0 

(1  86) 

462 

31  2 

4 

MLrP.  KC1  

.  .  .      (2.02) 

760 

26  0 

21  3 

43  1 

(1.99) 

502 

31  6 

5 

LaP. 

.      (  .95) 

270 

7.0 

10.3 

15.6 

(1.10) 

118 

15.2 

6 

L,  NaNo.  .  . 

...      (1.07) 

240 

12.6 

11.0 

15.9 

(1.19) 

172 

17.0 

7 

RLaP,  KC1.. 

..      (1.69) 

350 

43  2 

16  3 

38  1 

(1.73) 

268 

31.6 

8 

RLrP,  KC1  

.  .  .     (1.77) 

500 

41.2 

24.4 

42.2 

(1.84) 

350 

35.4 

0 

RLrP,  kainit  .  .  . 

.      (2.04) 

1070 

45.6 

25.3 

49.4 

(2.28) 

452 

38.4 

10 

LaP,  NaNoj  

....    (1.22) 

420 

12.8 

7.8 

22.8 

(1.91) 

115 

13.2 

Note. — In  1925  these  series  were  divided  into  west  and  east  halves  and  new  investigations  were 
begun.  All  plots  on  the  west  halves  and  Plot  9  on  the  east  halves  of  all  series  will  continue  under  the 
original  soil  treatment,  but  the  plots  on  the  east  halves,  with  the  exception  of  Plot  9,  receive  the  treat- 
ment indicated  above.  No  more  rock  phosphate  will  be  applied  to  any  of  the  original  phosphate 
plots  for  an  indefinite  period,  these  plots  having  received  a  total  of  8,000  pounds  an  acre. 


No  more  residues  to  Plot  6. 
'Substitute  for  wheat. 


38 


BULLETIN  No.  296 


[August, 


»!N  &  0 

02    OS'S 


£ 


-    o 
OQ      •<•« 


SOUTH  HALF 

00  CD  O  O         O  O  ?O  00         CO  ^ 

OOOOCN'*       -*T»<OOO       (NO 

studies  were  begun.  The  plots  on  the  south  halves  of  the  series 
,  designated  above.  No  more  rock  phosphate  will  be  applied  to 
8,000  pounds.  The  same  holds  true  of  the  north  half  of  Plot  9 
inner  as  the  residue  plots, 
ne-half  of  the  rotation  quota  ahead  of  corn  and  one-half  ahead 
s,  bone  meal  200  pounds,  gypsum  200  pounds. 
Plot  IN  and  ION,  4,000  pounds  having  been  applied  in  1924. 

oor>^H^H      ^t^-^w      LOCO 

OtNOO       0>t«t^CS       >^CO 

«9fcS   «*S53   S« 

OcO«5Ti<       OOCDCOCO       COOO 

OOt>.00       OOOOO       TfO 

O5O-*O       PPQO       I^CO 
CO--IOOO5       OOO--!       "5CO 

OO                O           i-i      1-1 

OO-H--I       i-1 

O  *O  »O  CO       CO  00  iO  O       t»  t*» 

co  ^  co  cq     ot^cooo     OO 

lOOOCOOO      «Ot~COO       t^t^ 

^^<NW        T-l^HCOCO        **rH 

£lNIN         1-lrtNIN         CO 

O^fOOO       OCOOOCO       OOO 

OOOOCO-*       (NCOOOCO       COCO 

CO  ^  OJ  CN       CO  CO  O  CO       i—  '  CN 
(NCO1O«5       CN<N-*CO       «3  IN 

iO  O  O.  CO       00  ^  O  ^      t^-  00 

coroiS     S3SS;     S2 

3>o^-(a>     co-^oio     COIN 

Note.  —  In  1924  the  plots  on  these  series  were  divided  into  north  and  south  halves  and  additional 
continue  under  the  original  soil  treatment  but  the  plots  on  the  north  halves  receive  the  soil  treatmen 
the  phosphate  plots  on  the  south  halves  for  an  indefinite  period,  these  plots  having  received  a  total  o 
of  all  series.  Both  halves  of  Plots  2,  3,  and  4  will  receive  the  sweet-clover  catch  crop  in  the  same  mi 
On  the  north  halves  the  phosphatic  fertilizers  and  gypsum  are  applied  twice  in  the  rotation,  o 
of  wheat  at  the  following  annual  acre  rates:  rock  phosphate  500  pounds,  acid  phosphate  200  pound 
The  minimum  amount  of  limestone  necessary  to  the  successful  growth  of  clovers  will  be  applied  to 

rH 

'-i                   ^i     -< 

OOOOOi       OOOi-<       OOi-H 

2 

885S   8852   ioS 

SSS?P  e^ps?  PS 

s 

? 

OOOCN       O^OO"     t~O 

O  O  »-H  '—  '                      t-l  T-H         ^H  O 

0 

OO-H—l                  ININ       —  (O 

Nl'-CC'O        OOMt»O       b-O 

CO  >O  U5  CN       O  IN  t^  00       COOO 

C^CO't^^O       Is*  |>"  »—  t  Tt<       OOO 

•^00X00       WX^O       CO1^* 

CO  00  ^t*  CO       CO  Tt<  CN  IN       ^  O 

^5,-t^O       GOi-tOSOO       ^t*CO 

cocooooo     cN>-ioot-     coO 

O^COCOO       C^MCDO       COW 

^H  —  iCOtN       CNCOCN-^       O^S 

:  r.jw       ;  i^   ^ 

:  :  :  :     :  :  :  :    S 

:  :  :  :     ::::§. 
:  :  :  :     :  :  :  :    E2 

:PU-°  fe     :  :  :  :  w 
:ids     •  -*3&<   &<% 

—CINOC-*       iflcO^OO       OlC 

1937} 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1926 


39 


TABLE  51.— UNIONVILLE  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
500 
Corn 

Series 
600 
Oats  i 

Series 
700 
Timothy 

Series 
800 
Cowpeas 

1 

0 

.    11.5 

18.6 

(    .20) 

(1  23) 

2 

MLrP  

37.4 

55.5 

(1.27) 

(1  83) 

3 

RLrP  

35.3 

45.8 

(   .88) 

(1  67) 

4 

RLrP,  k  in  i  dt  .  .  .          , 

.  .   33  .  0 

50  8 

(     87) 

(1  75) 

5 

RLrP,  shale  

34.3 

52.7 

(    .70) 

(1  69) 

6 

.  .    .   36  3 

57  7 

(     65) 

(1  53) 

7 

RLrP,  Omaha  K  

37.8 

(     65) 

(1  76) 

8 

0  

19.6 

38.3 

(    .38) 

(1.56) 

'Substitute  for  wheat. 


TABLE  52.— URBANA,  DAVENPORT  PLOTS 


Serial 
plot 
No. 

Series 
Soil  treatment                   100 
Oats 

Series 
200 
Alfalfa 

Series 
300 
Corn 

Series 
400 
Wheat 

Series 
500 
Soybeans 

WEST 

HALF 

1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

0  

65. 

0 

6 

,8 
3 
.8 

1 
9 
,8 
.3 
.5 

(2.32) 
(2  .  69) 
(2.99) 
(3.19) 
(3.08) 

(4.57) 
(4.68) 
(4.90) 
(4.81) 
(4.57) 

30.0 
32.8 
43.6 
46.4 
58.4 

63.2 
59.6 
65.6 
62.4 
67.6 

20 
16 
31 
44 
51 

55 
55 
52 
55 
64 

,3 
,7 
,3 
,3 
,0 

,7 
,3 
,3. 
,3 
.0 

(1.70) 
28.2 
(1.50) 
31.7 
(1.85) 

37.7 

(1.80) 
37.9 
(2.25) 
(2.40) 

R... 

73 

M.. 

78 

RL  

76. 

ML  

78 

RLrP... 

..  83 

MLrP  

86 

RLrPK  .  . 

83 

MLrPK... 

86 

LeM»LrP». 

97 

EAST 

HALF 

1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

0.  .  . 

.  .   53 

.1 

.8 
.5 
.5 
.8 

.1 
.6 
.9 
.5 
.3 

(1 

(1 
(2 
(2 
(3 

(4 
(4 
(4 
(4 
(4 

.82) 
.97) 
.01) 
.96) 
.05) 

.19) 
.90) 
.30) 
.37) 
.11) 

45 
48 
56 
53 
62 

63 

61 
57 
61, 
60 

2 
4 
0 
6 
4 

6 
6 
.2 
6 

,8 

26 
24 
33 
33 
37 

54 
55 
50 
53 
59 

.0 

.0 

.3 
.3 

,7 

,0 

.7 
.7 
.0 
,7 

(1-70) 
28.9 
(1.55) 
33.9 
(1.90) 

37.0 

(1.85) 
39.7 
(2.55) 
(2.80) 

R  

55 

M.  . 

77 

RL 

77 

ML  

83 

RLbP... 

..  88 

MLbP.  ... 

90 

RLbPK  . 

91 

MLbPK... 

92 

LeM'LbP'. 

96 

TABLE  53.—  URBANA, 

MORROW 

PLOTS 

Section 
of 
plot 

Soil  treatment 

PlotS 
(Continuous 
corn) 
Corn 

Plot  4 
(Corn  and  oats 
rotation) 
Oats 

Plot5 
(Corn,  oats, 
and  clover 
rotation) 
Oats 

N  W 

s  w 

NE 
SE 

0... 

20.4 
33.2 
22.4 
37.6 

23.8 
76.3 
21.9 
76.3 

40.6 
83.1 
48.1 
86.9 

MLrP.... 

0  

MLbP  .  .  . 

40 


BULLETIN  No.  296 


[August, 


TABLE  54.— WEST  SALEM  FIELD 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Soybeans 

Series 
200 
Corn 

Series 
300 
Wheat 

Series 
4002 
Sweet  clover 

Series 
5002 
Oats 

1 

0.  .  . 

.     3.5 

13.7 

7.4 

0.00 

0  0 

2 

ML'.  .  . 

8.5 

23.3 

14.8 

.72 

14  7 

3 

ML  

10.7 

19.5 

28.7 

2.17 

18  8 

4 

MLrP  

10.8 

24.7 

32.6 

1.92 

23  9 

5 

L> 

.     5.2 

7.8 

4.7 

0.00 

5  5 

6 

RIA.. 

5.8 

11.3 

11.3 

.42 

10  9 

7 

RL 

...     8.6 

16.2 

19.9 

2.17 

17  5 

g 

RLrP               

9.7 

27.4 

28.2 

1.98 

25  5 

9 

RLrPK 

.   13.2 

22.7 

34.2 

2.04 

37  0 

10 

0  

5.0 

10.9 

.9 

'Initial  application  of  lime  only.         There  are  only  9  plots  on  Series  400  and  500. 


TABLE  55.— WEST  SALEM  FIELD:     MINOR  PLOTS 


Plot  A 

PlotB 

PlotC 

Soil  treatment 

1925 
Wheat 

1926 
Sweet 
clover 

1925 
Timothy 
clover 

1926 
Timothy 
clover 

1925 
Sweet 
clover 

1926 
Wheat 

MLrPK.. 

.  .   29.2 

1.67 
0.00 

(l.H) 
(   .31) 

(1.21) 
(    .28) 

6.25 
2.00 

38.0 
16.2 

MrPK  

..    13.7 

Plot  D 


Plot  E 


PlotF 


Soil  treatment 

1925 
Wheat 

1926 
Corn 

1925 
Timothy 
clover 

1926 
Timothy 
clover 

1925 
Corn 

1926 
Wheat 

MLrPK. 

.    18  6 

25.5 

(   .87) 

(1.72) 

21.3 

40.2 

MrPK  .  . 

5.3 

12.2 

(   .34) 

(0.00) 

15.0 

20.4 

UNIVERSITY  OF  ILLINOIS-URBANA 

Q.630.7IL6B  C002 

BULLETIN.  URBANA 
295-3121927-28 


30112019529152 


